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How would a person do against 12,000 N?

  1. Dec 14, 2011 #1
    This isn't a homework question. I just saw 2012 and it bugged me when they made a turn and stayed in the car with an open door.

    i calculated the centripetal force to be 12,000 N. I assumed a mass of 90 kg. The mom had no seat belt and was holding on to a child. Could she have stayed seated or should she have been flung out of the car?

    Thanks.
     
  2. jcsd
  3. Dec 15, 2011 #2
    I haven't seen the movie but how did you calculate that? You must also take into account the force from the door's hinge.
     
  4. Dec 15, 2011 #3

    I like Serena

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    Homework Helper

    The force on the car is not what's relevant here.
    You'd want to know the acceleration on the person.

    Assuming a mass of the car of 1200 kg, you'd get an acceleration of 10 m/s2 or 1G.
    In other words, just once your regular weight.
    Since the angle is perpendular to gravity, it would feel as if your weight is 1.41 times that it actually is.

    This is doable.
     
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